Because grammar matters
Although you wouldn’t guess it from the typos peppering my posts, I do care about grammar. Apparently some corporations should also start caring about grammar. In Canada, the spin a sentence received from a comma cost $888,000 to a party to a commercial dispute.
To toot my horn, I’ve helped win a couple of cases by carefully parsing either turgid statutory language or obscure contractual clauses. It’s amazing what you can discover when you take the time to tease out someone’s meaning.